[DPG Map] Sometimes DPGs are not loading about publicgoods-scripts

[nathanfletcher]

While looking into this, my hunch was that we may have been hitting a rate limit on the GitHub API that pulls the data; which may have been a reason some DPG data would not load.
However, on second thought the GitHub API has a rate limit of 15k rph which makes me doubt that we actually hit that (though it is not totally impossible).
There may be another reason why DPGs do not sometimes load in this issue claim. However, the suggestion is a fair improvement on the code.

[nathanfletcher]

Closing issues as the source of DPG data has been changed from GH to a new database API